USS Seminar @ Uganda Martyr's
University A leading professional body that brings together statisticians,
statistics users and those engaged in related profession in Uganda.
14th March 2019
Methods of collection of Crop area Statistics
Out line :IntroductionBasic Concepts of Area StatisticsTechniques for data collectionData sources for Measuring Crop AreaMethods used for Crop Area EstimationChallenges & Photos
Presented byDickens George Ocen
Senior Statistician, Agriculture &
Environment StatisticsUganda Bureau of
Statistics
Invitation USS Annual General Meeting (AGM) is on
Thursday , 11th April 2019 @ UBOS Conference Hall
2pm
Uganda is an agricultural based country and its economy largely depends on agricultureAgriculture contributes about 24.3% to GDPAbout 80% of all households in the country are involved in agriculture90% of the rural households are involved in agriculture
Households by Type of activity Crop Growing Livestock Farming Mixed farming
Need for Agricultural Statistics Monitoring market trends Estimating future prospects of agricultural commodity markets forecasting planning and allocating resources They are vital tools for policy-making in the agricultural sector Precise estimate for area harvested and yield is paramount for accurate statistics on crop production–hence
better GDP estimation
Basic ConceptsArea Planted: Total Areas own with temporary and permanent cropsArea harvested: Total Area from which the crop is gatheredCrop Yield: average amount of produce obtained per unit of area harvested
Crop yield=Crop production/Area harvested
Sources of Crop Area StatisticsAgricultural Censuses: It’s normally a large sample survey and not a complete census.Sample Surveys: Agricultural surveys, crop production surveys, household surveys integrated with a module on agriculture.Administrative data sources: Farm and land registers, administrative reporting systems, data from local government units.Remote sensing: Aerial photographs, satellite imagery.
Techniques for Data collection PAPI (Paper Assisted Personal Interview) CAPI (Computer Assisted Personal Interview) CATI (Computer Assisted Telephone Interview) CAWI (Computer Assister Web Interview)
Area Measurement Methods Farmer Assessment of Crop Area Rope-and-compass Method Area measurement through Maps Global Positioning System (GPS) Remote Sensing and GIS
Seminar in Pic
Global Positioning System (GPS)This is a space-based satellite navigation system that provides location and time information anywhere on Earth
Procedure for Area Measurement Using GPS1. Mark your starting point with a stick so you can identify the
point when you return.2. The starting point should be the North West corner of the
plot3. Wait for the device to fix on at least 4 satellites.4. Note the time you a restarting to use the Garmin GPS5. Proceed to the starting corner of the plot where you have
marked with a stick.6. At the starting corner, wait until at least 4 satellites have been
acquired.7. Select the AREA CALCULATION page by high lighting and
clicking the center of the Thumb Stick
The GPS hard ware determines coordinates for the x, y and z axes, with x and y being the geographic coordinates that determine location and z being the coordinate that determines elevationGPS are used to determine the location, elevation, and even the area coveredAccording to the World Bank, systematic use of GPS-measured land area may result in improved agricultural statistics and a more accurate analysis of agricultural relationships (Carlettoetal, 2016)
Field worker
undertakes area
measurement using
GPS device
Enumerators climbing Hills to
access crop plots and parcels
to conduct area measurement
Remote Sensing Images
Plot Boundaries
Give and Take process
We appreciate UBOS for the continuous support to the USS and more thanks to
the Agriculture and Environment Statistics Department for the great
Presentation.